Ventilator



M. M. CAMP.

Chimney Cowl.

Patented Aug; '17, 1852.

I N. PUEHS. Phwumu nww. Wunhinglm n. a

UNITED STATES PALIET FFIOE.

MORTIMER M. CAMP, OF NEW HAVEN, CONNECTICUT.

VENTILATOR.

Specification of Letters Patent No. 9,193, dated August 1'7, 1852.

To all whom it may concern:

Be it known that I, MORTIMER M. CAMP, of the city and county of NewHaven, in the State of Connecticut, have invented a new and usefulImprovement in Machines to be Used as Ventilators or for Any otherSimilar Purpose; and I do hereby declare that the following is a full,clear, and exact description of the construction and operation of thesame, reference being had to the annexed drawings, making part of thisspecification, in which Figure 1, is a perspective view of the wholemachine when completed as a ventilator. Fig. 2, is a perspective View ofthe interior of the same.

I construct of metal, or of any other suitable material, a hollowcylinder, tube, or pipe, (at a Fig. 1), of the required size, (sayseventeen inches in diameter and two feet long,) to be placedvertically, the exterior of which except the end consists of a suitablenumber (say eight) flanges or slats, (b, b, Fig. 1,) of uniform size,and equidistant from each other, the aggregate width of which is aboutequal to the girth of said cylinder. The right hand edge of said flangeor slats, I attach firmly to the periphery of said cylinder, so thatsaid flanges or slats shall project to the left fro-m the saidperiphery, somewhat as tangents thereto; but at an obtuse angle with thediameter of said cylinder from the point of their contact therewith.This leaves an open space (a, 0, Fig. 1) nearly equal to their widthbetween the said flanges respectively for the influx of air; so that thewind striking against said flanges and entering said cylinders throughsaid open spaces, from whatever direction it may come, will be deflectedto the right. The upper end of said cylinder may remain open, or may beprotected by any suitable covering. Upon the lower end of said cylinderI place a hollow truncated cone or circular flange, of a conical form,(d, d, Fig. 1) the upper end fitting closely upon and firmly attachedthereto, and the lower part flaring outward therefrom (say four inches),on all sides. Under and within said truncated cone and sufiicientlydistant therefrom to permit the free passage of air between the two ashereinafter described; I attach a hollow cone, (6, 6, Fig. 1,) of whichthe apex coincides with the axis of said cylinder and the lower partprojects outward as far as the outward edge of said truncated cone,which two cones constitute my improvement.

Underneath the last described cone, I attach the end of a hollowcylinder, tube, or pipe (f, f, Fig. 1) of the length and size I desire,(say two feet long and fourteen inches in diameter) with suflicientspace be tween the same and the lower surface of said hollow cone forthe free passage of air as hereinafter described, the said two cylinders(a, a, and f f Fig. 1) and the said last described cone (6, 6, Fig. 1)being so arranged and combined that the axis of the said upper cylinder(at a Fig. 1,) extended downward shall pass through the apex of saidlower cone, (6 6 Fig. 1) and be coincident with the axis of said lowercylinder. Through the axes of the said two cylinders thus connected andthrough the apex of said lower cone I run a small spindle or shaft (a,a, Fig. 2) supported by and revolving in proper bearings (b, b, Fig. 2)at each end. Upon said shaft and firmly attached thereto, in the uppercylinder, I construct a wheel consisting of a convenient number (sayfour) arms or floats (c, c, Fig. 2) equidistant from each other, as longand wide as can revolve with said shaft within said cylinder, the saidfloats winding partly around said shaft to the left from the top in aslightly spiral form with an increasing curve toward their lower ends.Upon said shaft and firmly attached thereto in said lower cylinder Iconstruct a wheel, (d d Fig. 2) with a similar number of floats (e 6Fig. 2) or arms as long and wide as can conveniently revolve thereoncurved in a manner similar to those in said upper cylinder but in theopposite direction this said curve in them also increasing toward theirlower ends.

My machine (Fig. 1) being properly attached to a chimney or other placefrom' which it is desired to extract a current of airthe wind willimpinge upon said flanges or slats upon the exterior of said uppercylinder, and being freely admitted into said cylinder through the sameopenings between said flanges will be deflected to the right and strikeupon the floats of the Wheel upon the said shaft in said cylindercausing said wheel and said shaft to revolve with great velocity. Inconsequence of the peculiar form of the said floats of said Wheel theback air will be forced downward and out through the space (f, f, Fig.2) between the said two cones with great force, causing a vacuum underthe sald lower cone and around the upper end of said lower cylinder. Atthev same time the wheel upon said shaft in said lower cylinder,revolving in the samedirection; from the fact of the floats thereofbeing curved the other way, will raise up the air upon and around themcausing an upward current of air through said lower cylinder so as tosupply the aforesaid vacuum around its upper and in this manner a strongcurrent of air is created upward through said lower cylinder. Byreversing the posi tions of said flanges or slats (b, b, Fig. 1) uponthe exterior of said upper cylinder (at, a, Fig. 1) and also curvingsaid floats (a, c, Fig. 2) of said wheel (d cl Fig. 2)

volving vanes and flanges and cylinders opcrating as above described andset forth.

MORTIMER M. CAMP. In presence of CHARLES ROBINSON, JAMES ALBEE.

